error in compilation of binary tree code in c

hi,
I have been asked to implement a binary tree structure with the foll requirements
1) Generate 1000 integers from 100,000,001 to 100,001,000
2) Create a collection and add first 500 integers
3) Delete 400 integers from 101st to 500th.
4) Add the rest of 500 integers
5) Find all the odd numbers in the collection and delete all of them.
6) Your inordertraversal function writes all the items in the collection into a file named output3.txt as below.
100000002
100000004
100000006
....
i have written the code with 3 files which are as follows:

You appear to be the one that is clueless. Because your code is not indented, I won't look at it. I did look at the messages and give you a tip, which you seem to be ignoring. I'll give you one more, then I expect you to help us help you by presenting decently formatted code. This is wrong:

You appear to be the one that is clueless. Because your code is not indented, I won't look at it. I did look at the messages and give you a tip, which you seem to be ignoring. I'll give you one more, then I expect you to help us help you by presenting decently formatted code.

I would suggest one more thing. Help us to know the errors and not the whole bunch of code where we need to find the errors for you.